render/render.c

   1 #include <X11/Xlib.h>
   2 #include <X11/Xutil.h>
   3
   4 #include "render.h"
   5 #include "gradient.h"
   6 #include "font.h"
   7 #include "mask.h"
   8 #include "color.h"
   9 #include "image.h"
  10 #include "theme.h"
  11
  12 #include <glib.h>
  13
  14 #ifdef HAVE_STDLIB_H
  15 #  include <stdlib.h>
  16 #endif
  17
  18 static void pixel_data_to_pixmap(RrAppearance *l,
  19                                  gint x, gint y, gint w, gint h);
  20
  21 void RrPaint(RrAppearance *l, Window win, gint w, gint h)
  22 {
  23     int i, transferred = 0, sw;
  24     RrPixel32 *source, *dest;
  25     Pixmap oldp;
  26     RrRect tarea; /* area in which to draw textures */
  27     gboolean resized;
  28
  29     if (w <= 0 || h <= 0) return;
  30
  31     resized = (l->w != w || l->h != h);
  32
  33     oldp = l->pixmap; /* save to free after changing the visible pixmap */
  34     l->pixmap = XCreatePixmap(RrDisplay(l->inst),
  35                               RrRootWindow(l->inst),
  36                               w, h, RrDepth(l->inst));
  37
  38     g_assert(l->pixmap != None);
  39     l->w = w;
  40     l->h = h;
  41
  42     if (l->xftdraw != NULL)
  43         XftDrawDestroy(l->xftdraw);
  44     l->xftdraw = XftDrawCreate(RrDisplay(l->inst), l->pixmap,
  45                                RrVisual(l->inst), RrColormap(l->inst));
  46     g_assert(l->xftdraw != NULL);
  47
  48     g_free(l->surface.pixel_data);
  49     l->surface.pixel_data = g_new(RrPixel32, w * h);
  50
  51     if (l->surface.grad == RR_SURFACE_PARENTREL) {
  52         g_assert (l->surface.parent);
  53         g_assert (l->surface.parent->w);
  54
  55         sw = l->surface.parent->w;
  56         source = (l->surface.parent->surface.pixel_data +
  57                   l->surface.parentx + sw * l->surface.parenty);
  58         dest = l->surface.pixel_data;
  59         for (i = 0; i < h; i++, source += sw, dest += w) {
  60             memcpy(dest, source, w * sizeof(RrPixel32));
  61         }
  62     } else
  63         RrRender(l, w, h);
  64
  65     RECT_SET(tarea, 0, 0, w, h);
  66     if (l->surface.grad != RR_SURFACE_PARENTREL) {
  67         if (l->surface.relief != RR_RELIEF_FLAT) {
  68             switch (l->surface.bevel) {
  69             case RR_BEVEL_1:
  70                 tarea.x += 1; tarea.y += 1;
  71                 tarea.width -= 2; tarea.height -= 2;
  72                 break;
  73             case RR_BEVEL_2:
  74                 tarea.x += 2; tarea.y += 2;
  75                 tarea.width -= 4; tarea.height -= 4;
  76                 break;
  77             }
  78         } else if (l->surface.border) {
  79             tarea.x += 1; tarea.y += 1;
  80             tarea.width -= 2; tarea.height -= 2;
  81         }
  82     }
  83
  84     for (i = 0; i < l->textures; i++) {
  85         switch (l->texture[i].type) {
  86         case RR_TEXTURE_NONE:
  87             break;
  88         case RR_TEXTURE_TEXT:
  89             if (!transferred) {
  90                 transferred = 1;
  91                 if (l->surface.grad != RR_SURFACE_SOLID)
  92                     pixel_data_to_pixmap(l, 0, 0, w, h);
  93             }
  94             if (l->xftdraw == NULL) {
  95                 l->xftdraw = XftDrawCreate(RrDisplay(l->inst), l->pixmap,
  96                                            RrVisual(l->inst),
  97                                            RrColormap(l->inst));
  98             }
  99             RrFontDraw(l->xftdraw, &l->texture[i].data.text, &tarea);
 100             break;
 101         case RR_TEXTURE_LINE_ART:
 102             if (!transferred) {
 103                 transferred = 1;
 104                 if (l->surface.grad != RR_SURFACE_SOLID)
 105                     pixel_data_to_pixmap(l, 0, 0, w, h);
 106             }
 107             g_message("%d %d -> %d %d",
 108                       l->texture[i].data.lineart.x1,
 109                       l->texture[i].data.lineart.y1,
 110                       l->texture[i].data.lineart.x2,
 111                       l->texture[i].data.lineart.y2);
 112             XDrawLine(RrDisplay(l->inst), l->pixmap,
 113                       RrColorGC(l->texture[i].data.lineart.color),
 114                       l->texture[i].data.lineart.x1,
 115                       l->texture[i].data.lineart.y1,
 116                       l->texture[i].data.lineart.x2,
 117                       l->texture[i].data.lineart.y2);
 118             break;
 119         case RR_TEXTURE_MASK:
 120             if (!transferred) {
 121                 transferred = 1;
 122                 if (l->surface.grad != RR_SURFACE_SOLID)
 123                     pixel_data_to_pixmap(l, 0, 0, w, h);
 124             }
 125             RrPixmapMaskDraw(l->pixmap, &l->texture[i].data.mask, &tarea);
 126             break;
 127         case RR_TEXTURE_RGBA:
 128             g_assert(!transferred);
 129             RrImageDraw(l->surface.pixel_data,
 130                         &l->texture[i].data.rgba, &tarea);
 131         break;
 132         }
 133     }
 134
 135     if (!transferred) {
 136         transferred = 1;
 137         if (l->surface.grad != RR_SURFACE_SOLID)
 138             pixel_data_to_pixmap(l, 0, 0, w, h);
 139     }
 140
 141     XSetWindowBackgroundPixmap(RrDisplay(l->inst), win, l->pixmap);
 142     XClearWindow(RrDisplay(l->inst), win);
 143     if (oldp) XFreePixmap(RrDisplay(l->inst), oldp);
 144 }
 145
 146 RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
 147 {
 148   RrAppearance *out;
 149
 150   out = g_new0(RrAppearance, 1);
 151   out->inst = inst;
 152   out->textures = numtex;
 153   if (numtex) out->texture = g_new0(RrTexture, numtex);
 154
 155   return out;
 156 }
 157
 158 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
 159 {
 160     RrSurface *spo, *spc;
 161     RrAppearance *copy = g_new(RrAppearance, 1);
 162     gint i;
 163
 164     copy->inst = orig->inst;
 165
 166     spo = &(orig->surface);
 167     spc = &(copy->surface);
 168     spc->grad = spo->grad;
 169     spc->relief = spo->relief;
 170     spc->bevel = spo->bevel;
 171     if (spo->primary != NULL)
 172         spc->primary = RrColorNew(copy->inst,
 173                                   spo->primary->r,
 174                                   spo->primary->g,
 175                                   spo->primary->b);
 176     else spc->primary = NULL;
 177
 178     if (spo->secondary != NULL)
 179         spc->secondary = RrColorNew(copy->inst,
 180                                     spo->secondary->r,
 181                                     spo->secondary->g,
 182                                     spo->secondary->b);
 183     else spc->secondary = NULL;
 184
 185     if (spo->border_color != NULL)
 186         spc->border_color = RrColorNew(copy->inst,
 187                                        spo->border_color->r,
 188                                        spo->border_color->g,
 189                                        spo->border_color->b);
 190     else spc->border_color = NULL;
 191
 192     if (spo->bevel_dark != NULL)
 193         spc->bevel_dark = RrColorNew(copy->inst,
 194                                      spo->bevel_dark->r,
 195                                      spo->bevel_dark->g,
 196                                      spo->bevel_dark->b);
 197     else spc->bevel_dark = NULL;
 198
 199     if (spo->bevel_light != NULL)
 200         spc->bevel_light = RrColorNew(copy->inst,
 201                                       spo->bevel_light->r,
 202                                       spo->bevel_light->g,
 203                                       spo->bevel_light->b);
 204     else spc->bevel_light = NULL;
 205
 206     spc->interlaced = spo->interlaced;
 207     spc->border = spo->border;
 208     spc->parent = NULL;
 209     spc->parentx = spc->parenty = 0;
 210     spc->pixel_data = NULL;
 211
 212     copy->textures = orig->textures;
 213     copy->texture = g_memdup(orig->texture,
 214                              orig->textures * sizeof(RrTexture));
 215     for (i = 0; i < copy->textures; ++i)
 216         if (copy->texture[i].type == RR_TEXTURE_RGBA) {
 217             g_free(copy->texture[i].data.rgba.cache);
 218             copy->texture[i].data.rgba.cache = NULL;
 219         }
 220     copy->pixmap = None;
 221     copy->xftdraw = NULL;
 222     copy->w = copy->h = 0;
 223     return copy;
 224 }
 225
 226 void RrAppearanceFree(RrAppearance *a)
 227 {
 228     gint i;
 229
 230     if (a) {
 231         RrSurface *p;
 232         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
 233         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
 234         for (i = 0; i < a->textures; ++i)
 235             if (a->texture[i].type == RR_TEXTURE_RGBA) {
 236                 g_free(a->texture[i].data.rgba.cache);
 237                 a->texture[i].data.rgba.cache = NULL;
 238             }
 239         if (a->textures)
 240             g_free(a->texture);
 241         p = &a->surface;
 242         RrColorFree(p->primary);
 243         RrColorFree(p->secondary);
 244         RrColorFree(p->border_color);
 245         RrColorFree(p->bevel_dark);
 246         RrColorFree(p->bevel_light);
 247         g_free(p->pixel_data);
 248
 249         g_free(a);
 250     }
 251 }
 252
 253
 254 static void pixel_data_to_pixmap(RrAppearance *l,
 255                                  gint x, gint y, gint w, gint h)
 256 {
 257     RrPixel32 *in, *scratch;
 258     Pixmap out;
 259     XImage *im = NULL;
 260     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
 261                       ZPixmap, 0, NULL, w, h, 32, 0);
 262     g_assert(im != NULL);
 263
 264     in = l->surface.pixel_data;
 265     out = l->pixmap;
 266
 267     im->byte_order = LSBFirst;
 268 /* this malloc is a complete waste of time on normal 32bpp
 269    as reduce_depth just sets im->data = data and returns
 270 */
 271     scratch = g_new(RrPixel32, im->width * im->height);
 272     im->data = (char*) scratch;
 273     RrReduceDepth(l->inst, in, im);
 274     XPutImage(RrDisplay(l->inst), out,
 275               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
 276               im, 0, 0, x, y, w, h);
 277     im->data = NULL;
 278     XDestroyImage(im);
 279     g_free(scratch);
 280 }
 281
 282 void RrMinsize(RrAppearance *l, gint *w, gint *h)
 283 {
 284     gint i;
 285     gint m;
 286     *w = *h = 0;
 287
 288     for (i = 0; i < l->textures; ++i) {
 289         switch (l->texture[i].type) {
 290         case RR_TEXTURE_NONE:
 291             break;
 292         case RR_TEXTURE_MASK:
 293             *w = MAX(*w, l->texture[i].data.mask.mask->width);
 294             *h = MAX(*h, l->texture[i].data.mask.mask->height);
 295             break;
 296         case RR_TEXTURE_TEXT:
 297             m = RrFontMeasureString(l->texture[i].data.text.font,
 298                                     l->texture[i].data.text.string);
 299             *w = MAX(*w, m);
 300             m = RrFontHeight(l->texture[i].data.text.font);
 301             *h += MAX(*h, m);
 302             break;
 303         case RR_TEXTURE_RGBA:
 304             *w += MAX(*w, l->texture[i].data.rgba.width);
 305             *h += MAX(*h, l->texture[i].data.rgba.height);
 306             break;
 307         case RR_TEXTURE_LINE_ART:
 308             *w += MAX(*w, MAX(l->texture[i].data.lineart.x1,
 309                               l->texture[i].data.lineart.x2));
 310             *h += MAX(*h, MAX(l->texture[i].data.lineart.y1,
 311                               l->texture[i].data.lineart.y2));
 312             break;
 313         }
 314     }
 315
 316     if (l->surface.relief != RR_RELIEF_FLAT) {
 317         switch (l->surface.bevel) {
 318         case RR_BEVEL_1:
 319             *w += 2;
 320             *h += 2;
 321             break;
 322         case RR_BEVEL_2:
 323             *w += 4;
 324             *h += 4;
 325             break;
 326         }
 327     } else if (l->surface.border) {
 328         *w += 2;
 329         *h += 2;
 330     }
 331
 332     if (*w < 1) *w = 1;
 333     if (*h < 1) *h = 1;
 334 }
 335
 336 gboolean RrPixmapToRGBA(const RrInstance *inst,
 337                         Pixmap pmap, Pixmap mask,
 338                         gint *w, gint *h, RrPixel32 **data)
 339 {
 340     Window xr;
 341     gint xx, xy;
 342     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
 343     XImage *xi, *xm = NULL;
 344
 345     if (!XGetGeometry(RrDisplay(inst),
 346                       pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
 347         return FALSE;
 348     if (mask) {
 349         if (!XGetGeometry(RrDisplay(inst), mask,
 350                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
 351             return FALSE;
 352         if (pw != mw || ph != mh || xd != 1)
 353             return FALSE;
 354     }
 355
 356     xi = XGetImage(RrDisplay(inst), pmap,
 357                    0, 0, pw, ph, 0xffffffff, ZPixmap);
 358     if (!xi)
 359         return FALSE;
 360
 361     if (mask) {
 362         xm = XGetImage(RrDisplay(inst), mask,
 363                        0, 0, mw, mh, 0xffffffff, ZPixmap);
 364         if (!xm)
 365             return FALSE;
 366     }
 367
 368     *data = g_new(RrPixel32, pw * ph);
 369     RrIncreaseDepth(inst, *data, xi);
 370
 371     if (mask) {
 372         /* apply transparency from the mask */
 373         di = 0;
 374         for (i = 0, y = 0; y < ph; ++y) {
 375             for (x = 0; x < pw; ++x, ++i) {
 376                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
 377                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
 378             }
 379             di += xm->bytes_per_line;
 380         }
 381     }
 382
 383     *w = pw;
 384     *h = ph;
 385
 386     return TRUE;
 387 }